Excavating and loading machine.



E. .I. 'BIRKETT. EXCAVATING AND LOADING MACHINE.

APPLICATION vmin mun. I9l5 1,287,195. v Patented Dec. 10, 1918.

5 SHEETS-SHEET I.

E. J. BIRKETT. EXCAVATING AND LOADING MACHINE. APPLICATION FILED APR.23.1915.

1,287,]. 95., Patented Dec. 10, 1918.

5 SHEETSSHEET 2.

E; J. BIRKETT. EXCAVATING AND LOADING MACHINE.

APrucAnou FILED mus. 191:.

1,287,195. Patented Dec.10, I918.

5 SHEETS-SHEET 3.

- E. l. BIRKETT. *ixcAvA'nm; mo Lo/gomc MACHINE.

APPLICATION FILED APIL23- l9l5- Patentd Dec. 10, 1918.

5 SHEETS-SHEET 4.

E...I. BIRKETT. EXCAVAHNG m0 powm MACHlNE. APPLICATION FILED "8.23.ISIS.

1,287,195. v Patented Deon-10,1918.

5 SHEETS-SHEET 5.

UNITED STATES PATENT OFFICE.

EDWARD J'. IBIRKETT, 0F RACINE, WISCONSIN, ASSIGNOR TO .1. I. CASETHRESI-IING MACHINE COMPANY, OF RACINE, WISCONSIN, A CORPORATION.

EXCAVATING AND LOADING MACHINE.

Specification of Letters Patent.

Application filed April 23, 1915. Serial No. 23,397.

' '1 0 all whom it may concern:

'of Racine, county of Racine, and State of lVisconsin, have inventedcertain new and useful Improvements in Excavating and Loading Machines,of which the following is a full, clear, and exact description.

The invention relates to excavating and loading machines and seeks toprovidean improved apparatus for rapidly excavating and loading earthand like material lnto wagons, a further object of the invent on beingto provide an improved excavating and loading machine which can bereadily transported. The invention consists of the features "ofimprovement hereinafter set forth illustrated in the preferred form inthe accompanying drawings and more particularly pointed out in theappended claims.

Figure 1 is a view in elevation of the improved apparatus. Fig. 1 is a.view in elevation of the excavating scoop. Fig. 2 is a plan view of theapparatus looking in the direction of the arrows22 of Fig. 1. Fig. 2 isa plan view of the scoop. Fig. 3 is a horizontal section of theapparatus illustrat ing the operating mechanism. Fig. 4 is a section onthe line 41 of Fig. 3. Fig. 5 is a detailed section on the line 55 ofFig. 3. Fig. 6 is an inverted plan view of the parts shown in Fig. 5.Fig. 7 is a detailed section on the line 77 of Fig. 5. Fig. 8 is apartial view in side elevation with the parts of the apparatus inposition for transportation. Fig. 9 is a detailed plan view with theparts shown in section on the line 99 of Fig. 8. Fig. 10 is a detailedsection on the line 101O of Fig. 8. Figs. 11, 12 and 13 are detailedsections on lines 1111, 1212 and 13-13 respectively of Fig. 1.

For convenience in transportation, the machine is mounted upon front andrear axles l0 and 11, having wheels 12 and 18 thereon.

'The frame of the machine comprises side lower ends of these bars extenddownwardly somewhat below the front ends of the sills. The frame bars 15and 16 are connected at intervals by transverse bars 17, 18 and 19.Sheet metal plates 20 riveted or otherwise suitably secured to the sidesills and frame bars inclose the operating mechanism.

An inclined guide-way or trough 21 for the excavating scoop is providedat the upper front portion of the machine. The trough is formed of sheetmetal and is preferably provided with flaring side walls (see Figs. 11and 12) and it is secured to correspondingly shaped supporting bars'22which extend between the inclined frame bars 16., which are preferablyZ-shaped, as shown.

- Preferably, the bottom and side walls of the trough or guide-way areprovided with longitudinally extending wooden boards 21, which reducethe friction between the trough and the scoop as the latter is, drawnup- .wardly. The guide-way or trough is provided at its lower end withan adjustable section 25 (see Figs. 1, 2, 8, 12 and 13,) which, inoperation, rests upon the ground, as shown in Fig. 1, but which can beraised out of the Way, as shown in Fig. 8, when the machine is movedfrom place to place. Like the main portion of the trough'or guide-way,the extension 25 is formed of sheet metal and is secured at its sideedges to a pair of Z-bars 26 which rest upon the horizontal flanges ofthe fixed. frame bar 16 and which are held in place thereon by anglestrips 27 fixed to the bars 16 and overlappingthe upper edges of the"ertical flanges of the bars 26. lhe extension is thus adapted to slidelongitudinally of the main portion of the guide-way to and from theground. Preferably, as shown, the sheet metal body of the extension 25is provided with edge portions 28 which extend over the bars 16. Thelower end or foot of the trough extension 25 is outwardly curved inlongitudinal direction and is provided with lateral flaring portions 29(see Figs. 1 and 2), the latter being provided with convex or roundedupper faces. The outwardly curved lower end of the extension 25 and theopposite portions 29 contact with the ground, and the latter arereinforced with castings 30 (shown in dotted lines in Fig. 1).

The extension of the guide-way or trough carries suitable means forguiding the excavating scoop and the lines connected thereto.

Patented Dec 10, 1918.

For this purpose, a pair of comparatively opposite sides of theguide-way. These drums are mounted on shafts 33, which are journaled intheir lower ends in the castings 30 and at their upper ends in brackets34.

. These brackets are secured to' the ends of around one or the other 0brace bars 35, which extend outwardly from the bars 26.

The guiding drums 32 are thus arranged in position at a' slight angle tothe vertical, on opposite sides of the entrance to the guide-way.Between the upper ends of these guiding drums extends a smallertransverse guiding roller 36'which is journaled at its. ends in brackets37 on the bars 35.

The excavating scoop 38 shown is of ordinary constructlon andthe dragline 31 is connected to the bail 39 thereof. Thence the drag linepassesbetween the guidin drums 32 and beneath the guiding roller 36%; wardlyat an incline above the guide-way to a guiding pulley 40 at the extremeupper end of the machine, and thence the drag line passes downwardlyover a guide pul ey 41 to a winding drum 42.

' The arrangement of the guiding drums 32 andthe guide roller 3.6. issuch that the drag line can extend .laterally from the en-' trance totheguide-way at a sharp angle thereto, so that a large area can beexcavated without movin the machine. When the drag line exten slaterally at an angle to the chute, the dra rope passes the guidingdrums 32. These drums 32, as most clearly shown in Fig. 2, form theopposite .side walls of a flaring throat at the entrance of thetrough-shaped guide-way and serve to properly direct the scoop into theguide-way when the scoop approaches the guide-way at an angle. thereto.As the scoop is thus drawn toward the entrance of the guide-way its.bail will strike one or the; other of the guiding drums 32, but as thesedrums are of considerable size, the scoop will .be'properly deflectedand will pass into the entrance of the trough-shaped guide-way. The

drums 32 and the roller 36 also serve to properly guide the drag line 31as the scoop passes to and from the entrance of the guide-.

The return line 43 is connected to the rear end of the excavating scoopand extreme upper portion of the machine and its hence uptends therefromover a guide pulley 44 that is carried by an anchor 45 and can be fixedin any desired position within the range of the machine.

From the anchor pulley 44 the return line passes upwardly over a guidepulley .46 at the upper portion of the machine and thence downwardly toa winding drum 47.

The guide pulley 40 is located at the'exinner periphery is substantiallyin line ith. the center of. the guide-Way, and the guide pulleys 41 and46 and the winding drums 42 and 47 4 are located atone sidei of the11121 chine. Preferably, as shown, these guide pulleys and winding drumsare duplicated at opposite sides of the machine, as most clearly shownin Fig. 2, so that the draft and return lines'for the scoopmay beduplicated and the machine adapted to operate with two scoops.

[The guide pulleysnfi, 41 and. 46 are neces? sarily arranged at aconsiderable height'and I for convenience in transportation arepreferably mounted .on an adjustable frame so that they can be loweredout of the way when the machine is'moved from place to place. This framecomprises a pair of in: clined side bars 48 havi-n upper converging endport-ions connect by a member 49 to which the ide pulleys 40 areswiveled. The-guide pu leys 41 are fixed to the. bars .I 48 as shown inFig. 2. The guide pulleys 46 are swiveled to short pieces 51 which.project laterall from the lower ends of the bars 48. he extreme lowerends: of the framebars 48 slidably engage the out turned flanges of thefixed frame bars '16-. The upper ends of the frame bars '48- arepivotallyconnected to th uppere of brace bars 52. The lower ends of thelatter are pivotally connected to the upper ends'of .the fixed framebars 15. Bracerods that are fixed to the extreme upp'erendpof the-guidintrough. The rods 53 are de- -tachably botedto the links'52 and can bedisconnected so that the frame which car-- rice the guide pulleys can belowered, as v shown in Fig. '8.- When this frame is lowered, the bars orlinks 52 swing) downwardly and forwardly u on pivots etween their lowerends and the tame bars '15.

This frame is raised from lowered position by a air of ropes 55, whichare connected to tfie lower side portions thereof and extend upwardlyover a pair of guide pulleys 56 at the upper side portions of theguideway, thence the ropes pass downwardlytb a'pair'of small windingcones 57. By this f means, the, upper extension for supporting theguiding ulleys can be raised to the op.-

erative position shown in Fig. 1- and thenv fixed inthisposition bysecuring the brace. ,13o

nds' of a pair 105 rods 53 to the bars or links 52. Whenthe upperextension is thus raised, the ropes 55 are removed from. the smallwinding cones -57. v v

.The loWer trough extension .is adapted to be raised from itsoperativeposition shown in Fig. 1 to its inoperative position shown .ih Fig. 8by-a cable 58 fixed to a bracket59 on its lower face and extendingupwardly therefrom over a guide pulley 60 (see Figs. 1 and-8) to awinding drum 61 (see Figs. 3 and 6). This drum is loosely mounted on ashaft 62, and is adapted to be connected theretobya slidingijaw clutch63'. At one end, the drum 1s provided with a ratchet .wheel 64 which isarranged to be engaged by a spring-held pawl 65, so that the troughextension can be held in raised position .against the action of gravitywhen the clutch member 63' isin disengaged position. By shifting thepawl65 against the tension of its spring 66 out of engagement with theratchet 64, the trough extension can be read- I ily lowered to itsoperative position shown in Fig. 1.

The drag line 31 and Winding drum 42 serve to effect theforward movementof the excavating scoop 38 filled, the drag line alsodraws the scoopWhen the scoop is to the lower. end of and 'up the guide-way of thetrough. When the scoop reaches the upper end of the guide-way, itsforward edge will strike the hooks 54, and the continued forward pull ofthe drag line upon the scoop bail 39 will tilt the latter, as

- shown in dotted lines in Fig.1, and hence discharge the contents ofthe scoop.

To check this'tilting movement of the scoop, a 'U-shaped bail 67 ispivotallymounted upon the frame bars 48 and springs 68 extend betweenthe arms of this bail and the lowerends of the frame bars 48. Stops'69on the frame bars prevent the bail from swinging forwardly from theposition shown in full lines in Fig. 1, but

,the bail can swing rearwardly againstthe tension of the spring 68 untilarrested by a pair of stop bars 70 that project outwardly from the bars48 (see Figs. 1 and 2). As the scoop is tilted, the: handle bars 38thereon strike against .the upper horizontal portion of the bail and thefurther movement of the scoop is resisted by the spring 68, and thescoop is finally arrested in the dotted position shown in Fig. 1 whenthe bail67 strikes the stop bars 70.

If desired, thescoop can dump its load directly into'a cart placedbeneath its dumping positiombut preferably the load is dumpedjnto areceptacle large enough to contain a wagon-load, and means are providedfor dumping. the receptacle to quickly discharge. its contents into acart, so that practically no time is lost in unloading thescoops andloading thecarts.

For this purpose, a receptacle 71 is mounted at the upper rear. portion'of the machine immediately below the dumping position of the scoop.This receptacle comprises side walls and a flat bottom wall that iscurved upwardly at its rear end. This receptacle is provided at thecentral portions of its bottom wall with trunnions 72 which i arejournaled in brackets fixed to the rear frame bars 15. The rear edges ofthe side walls are concentric with the trunnions 72 and are providedwith curved flanged bars 73." The receptacle is normally held in the 1position shown in F ig; 1, with its bottom wall horizontal and with .itsrear end adjacent a curved guide plate 74 fixed to the frame of themachine beneath the upper -end of the guide-.way. Side plates 75 at theupper side portions of the machine also overlap the rear end of thereceptacle when it is in the normal position. The rear end of thereceptacle is open, and to prevent the escape of material therefrom,when it is in normal'position (shown in full lines in Figs. 1 and 8), aU-shaped shield 76 projects rearwardly from the frame bars 15 and coversthe open rear end of the receptacle. As.

stated, the receptacle is adapted to contain about a wagon-load ofmaterial and is held at such a height at the upper rear portion of themachine that the wagon can be readily placed behind the machine andbeneath the receptacle and loaded by shifting the re-' ceptacle fromnormal position to its dumping position, .with is bottom wall downwardlyand rearwardly inclined and its rear open end below-the shield 76, asshown in prises the shaft 62 (already referred. to) and shafts 7 9, 80and 81 (see Figs l, 3 and 5), such shafts being iournaled in suitablebearin s mounted upon horizontal frame bars 1 Themain power shaft 79 isvprovided with two sprockets wheels 82 which are connected, by chains 82to a pair of sprocket'wheels 83 and 83' on theflengine shaft 78. Thesprocket wheels 82 are loose on the shaft 79 and adapted to beconnected.

by a suitable clutch mechanism. 3 In the form, shown, this clutchmechanism comprises ahub portion 84 which is keyed to theshaft and whichis provided with two sets of toggle arms 85 and friction shoes 85, thelatter being arranged to cooperate with internal friction surfacesformed upon the sprocket wheels 82. --A. clutch shifter 86 is pivoted at86' on a bracket 87, and is ary ranged to shift the clutch member toconnect in accordance with the consistency of the material acted upon.In the central position of. the clutch member 84:, neither one of thesprocket wheels will be connected to the shaft 79 so that the mechanismis then I disconnected from the motor. The forward end of the clutchshifter 86 is provided with a rod.88 which extends outwardly through theside wall of the machine casing, so that fhe, cflutch shifter may bereadily manipuate u The shaft 79 is provided at one end with a pinion89, which meshes with the gear 90 on "the shaft .62, so that the latteris'continuously rotated when the machine isin operation. The drag linedrums 42 are loosely mounted upon the outer projecting ends of thisshaft and are adapted to be connected thereto by-a' pair of jaw clutches91 which are feather-keyed to the shaft. Preferably, as shown, yokes 92project outwardly from the bars 17 and are provided with bearings forsustaining :the outer ends of the'shaft 62. A pair of levers 93'forshifting the clutches 91 are 'pivotally mounted on the yokes 92-andthese levers are connected by a transverse rod 94 which extends throughthe operating mechanism.

the machine casing and the parts are so connected that when one, clutchis engaged, the other must be dlsengaged, and when one of the windingdrums is connected to the shaft 62 to wind up this drag line, the otherdrum, which is connected to the drag line of the second scoop, isnecessarily disengaged from The return l1ne drums 47' can'be rotated..faster than the drag line drums and are mounted directly upon the mainpower shaftv '7 9 and'are adapted to be connected thereto;

by 'a pair of friction clutches 95. Guard brackets 96 fixed to the framebar 17 and i .to the yokes 92, surroundthe winding drums I '47 andlevers 97, are pivotallyxmounted" thereon for shifting theclutches 95.These levers are connected b .a transverse rod 98 so that only one-of ta return line drums can be thrown intooperatlon at anyone time. themechanism described, the two Y machine, the return line drum 47 of thescoops can be alternately operated When one" of the drag line drums 421s'1noperation to draw its scoop forwardly toward the other scoop is inoperation to move it away from the machine.

The main power shaft is provided with a pinion 99 (see Figs. 5 and6)whlch meshes with a gear 100. that is. loosely mounted on the shaft 80..This'shaft isprovided with a gear 101 which meshes with a gear 102 onthe shaft 81. pair of crank arms 103 memes .(see Figs. 1 and 2) arefixed to the ends of the'shaft81 and are connected by links 104 to theforward end of the dumping receptacle.

An arm 105 (see Figs. 5 and 6) is keyed to the shaft 80 and is providedat its end i with pivoted holding and operating dogs 106 and 107. Theholding dog 106 is pressed by a spring 108 and normally engages a fixedtoothed plate 109, so that the shafts 80 and 81 and the parts connectedthereto,

including the receptacle 71, are held stationary in normal position. I v

The toothed plate 109 is fixed to a dependinglug 110 on a bracket 111.This bracket is mounted on the shaft 81 between a pair of collars 112thereon and the bracket is held against movement by a brace rod 113'extending between its upper end and atransverse frame bar 114, which, asshown in Fig. 1, is fixed to the frame bars 15. A

short rock shaft 115 journaledin the upper end of the bracket 111is-provided with an integral depending crank arm'116 and with adepending supporting arm 117. Theflat. ter is provided with a socket fora'stop bolt 118. Aspring 119 within the sockettends to move the stopbolt downwardly, this downward movement being limited by nuts .120threaded on the upper end of the stop bolt. The stop bolt cooperateswith alug 121 which is formed on the clutch dog 107 A tail 122 on thisdog is engaged by a spring 123; This spring holds the lug 5121 1 againstthe stop bolt 118, and, when the letter is shifted-out of engagementwith the lug, the spring will move the clutch dog 107" into engagementwith internal teeth 124:

formed upon the rim' of the gear 100.? I A spring 127 is interposedbetween the bracket 111 and holder 117, and this spring holds the stopbolt 118 in the normal position shown.

A shifter rod 125 is connected to'the' crank arm 116 so that theshaftcanbefrocked.

to shift the stop bolt'118' against the ten! i sion of the spring'127,out ofthe path of movement ofthe lug 121. -This shifter 1 rod isconnected to a crank arm 126 on the inner end of a rock shaft 128.'Shaft 128 fixed to one of the cross pieces .22. 128 projects outwardlythrough the side of isjournaled. upona bracket 129 thatis Shaft themachine and has a handle 130 on its.

outer-end by which it may be oscillated and shifted longitudinally. -B.yoscillating-the; Y

handle 130, the stop bolt 118 ,canbe disen gaged from the lug 1211 sothat the clutch gear. 100. [Shafts 80 and 81 will then be rotated tooscillate the receptacleand dump I its, load. The spring 127 returns thestop bolt to normal-position, as shown, so hat at the end of onerevolution of the shaft 80,

lug 121 will-engage the stop bolt and the dog 107 will engage/the tooth12 1 of the At the same time,

the stop dog 106 will engage the toothed member 109 and hold the shaft80 and parts connected thereto stationary. In this'way,

a single revolution will be imparted to the shaft 80 and'the clutch dogwill then be automatically disengaged. The gear 102 on the shaft 81 istwice-as large as its cooperating .gear 101 on the shaft 80,- so that ahalf-revolution is imparted to the shaft 81 Y and the receptacle will bearrested in the dumping position shown in dotted lines in Fig. 1.Byagain throwing this clutch mechanism into operation, anotherhalfrevolution can be imparted to the shaft 81 to return the receptacle71 to normal position.

In addition to the crank arm 126, the rock shaft 128 is provided with ashifter 131 for the clutch 63. This shifter is loosely mounted on theshaft so that it does not interfere with its oscillating movement, butis held against relative longitudinal movementby a collar 132 which isfixed to the shaft. By moving the shaft 128 longitudinally, the jawclutch 63 can be thrown into and out of operation and thereby cooperatewith the drum 61 to wind up the cable 58. Shaft. 128 is also providedwith an arm 133 which is arranged to cooperate with a projecting lug 134on the side of the pawl 65. The rod 125 is shifted to throw thereceptacle dumping mechanism into operation by oscillating the rockshaft 128 in one direction. This rod has a lost motion connection withthe crank arm 116, so that the shaft can be oscillated in the oppositedirection and when so oscillated it disengages the pawl 65 from theratchet 64 so that the rope 58 can be unwound and the lower troughextension lowdumped into wagons or carts, the receptacle dumpingmechanism being controlled by the rock shaft 128. The drag and returnlines of the scoops can extend laterally at an angle to the machine, sothat a large area can be covered without moving the machine. The lowerextension of the guide-way can be readily raised and the upper extensionwhich carries the guide pulleys can be readily lowered for conveniencein transportation.

It is obvious that numerous changes may be made in'the details setforth, without departure from the essentials of the invention.

I claim as my invention: 1. In an excavating machine, the combinationwith a scoop and drag line therefor, of a portable frame having aninclined troughshaped guide-way for said scoop, a guide pulleyland awinding drum for said drag line mounted on said frame, and atroughshaped extension at the lower end of said guideway adjustable toand from the ground, said extension having a foot outwardly curved inlongitudinal direction and adapted to engage the ground, substantially.as described.

2. In an excavating machine, the combination with a scoop and a dragline therefor, of a portable frame having an inclined guide-way for saidscoop, a guide pulley and wlnding drum for said drag line mounted onsaid frame, and anextension mounted upo'n the lower end of saidguide-way and adjustable longitudinally thereof to and from the ground,substantially as described.

3. In anexcavating machine,the combination with a scoop and a drag linetherefor, of a portable frame having an inclined troughshaped guide-wayfor the scoop, a guide pulley and a winding drum for said draglinemounted on said frame, a. trough-shaped extension at the lower end ofsaid guide-way adjustable to and from the ground, said extension havinga foot outwardly curved in longitudinal direction and provided withlateral extensions adapted to contact with the ground and uprightguiding drums mounted upon the laterally projecting portions of saidfoot and forming the opposite side walls of a. flaring throat at thelower end of said extension, substantially as described.

4. In an excavating machine, the combination-with a scoop and dragline-therefor, of

a portable frame having an inclined guideway for said scoop, a guidepulley and a winding drum for said drag line mounted on said frame, anextension at the lower end of said guide-way adjustable to and from theground, and guiding devices for the I scoop and drag line mounted onsaid exten sion, substantially as described. In an excavating andloading machine, the combination with a scoop and drag line therefor, ofa portable frame having an inclined guide-way for the scoop, a windingdrum for the drag line on saidframe, an adjustable extension frame atthe upper end of said guideway, and guide pulleys for said drag linemounted on said extension, sub-- stantially as described.

6. In an excavating and loading machine, the combination with a scoopand drag line therefor, of a portable frame having an inclined guide-wayfor the scoop, a winding drum for the drag line on said frame, an adjustable extension frame at the upper end of i said guide-way, guidepulleys for said drag return lines therefor, ofa portable frame havingan inclined guide-way forthe scoop, winding drums onsaid frame for saiddrag and return lines, an extension frame adjustably mounted at theupper end of said guideway and guide pulleys for said drag and returnlines mounted on said extension frame, substantially as described.

8.. In an excavating and loading machine, the combination with a scoop,and drag and return lines therefor, of a portable frame havinganinclined guide-way for the scoop,

winding drums on said frame for said drag and return lines, an extensionframe adjustably mounted at the upper end of said guide-way, guidepulleys for said drag and return lines mounted on said extension, ascoop-guiding extension at the lower end of said guide-way adjustable toand-from the ground, and means for raising and lowering said extensions,substantially as described.

9. In an excavating and loading machine, the combination with a scoop,and drag and return lines therefor, of a portable frame having aninclined guide-way for the scoop, winding drums on said frame for saiddrag and return lines, an extension frame adjustably mounted at theupper end of said guideway, guide pulleys for said drag and return linesmounted on said extension, a scoopguiding extension at the lower end ofsaid guide-way adjustable to and from the ground, adjusting ropes forsaid extensions, winding drums for said ropes, a motor on said frame,and means actuated thereby for operating said several winding drums,substantially as described. 10. In an excavating machine, thecombination of a frame having an inclined scoop guide-way thereon,-scoopdumping means at the upper end ofsaid guide-way, pairs of drag andreturnline guide pulleys at the upper end of said guide-way, a pair ofdrag line drums, a pair of return line drums,

drivingmechanism for said drums, connectthe rear end of said frame andbeneath the upper end of said guide-way, and a common motor on saidframe for operating said winding drums and for tilting said receptacleto .dump the same,-su-bstantially as described. v

. 12. Inan excavating and loadingmachine, the combination of a framehaving an inclined scoop guide-way thereon, scoop dumping means at theupper end of said guide-way, a tilting receptacle open at one' endmounted on said frame below the upper end of said guide-Way, a fixedshield normally closing the open end of said receptacle, and mechanismfor tilting said receptacle, substantially as described.

13. In an excavating and loading machine, the combination of a framehaving aninclined scoop guide-way thereon, a receptacle mounted on saidframe below the ,upper end of said guide-way, mechanism for moving saidreceptacle between its normal and dumping positions and for holding thesame in either of said positions, and an automati cally disengagedclutch for throwing said mechanism into operation, substantially asdescribed. I

14:. In an excavating and loading machine, the combination of a framehaving an inclined scoop guide-way thereon, a tilting receptacle mountedon said frame below the upper end of said guide-way, an operating shafthaving crank arms thereon, links connecting said arms to saidreceptacle, and means for intermittently actuating said shaft,substantially as described.

EDWARD J. BIRKETT.

